SMA SC 100LV-560HE User Manual
Central inverter
SUNNY CENTRAL 100LV - 560HE
Installation Guide
SC125_560HE-IEN083220 | 98-4004820 | Version 2.0
EN
SMA Solar Technology AG Table of Contents
Table of Contents
1 Notes on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Storage of the Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Appropriate Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.1 Personnel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.2 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.3 Special Hazards of Photovoltaic Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2.4 Electrical Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2.5 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.6 Disconnecting the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.7 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3 Delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.1 Transport. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.1.1 Transport Possibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2 Identifying the Sunny Central . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2.1 Checking for Transport Damages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2.2 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4 Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.1 Installation Site Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.1.1 Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.1.2 Distance to the wall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.1.3 Inverter Protection Rating / EMC / Sound Levels . . . . . . . . . . . . . . . . . . . . . 20
4.1.4 Electrical Operating Room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1.5 Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Installation Guide SC125_560HE-IEN083220 3
Table of Contents SMA Solar Technology AG
4.2 On-Site Inverter Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.1 Remove transport locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.2 Mechanical coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.2.3 Anchorage to the ground or wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1 Internal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1.1 Power cabling between sine filter and transformer . . . . . . . . . . . . . . . . . . . . 30
5.1.2 HE version: Power cable connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1.3 PE connection between AC cabinet and DC / inverter cabinet . . . . . . . . . . 36
5.1.4 Control lines at the transfer terminal strip . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.1.5 Connecting Sunny Central Control to power unit . . . . . . . . . . . . . . . . . . . . . 38
5.1.6 Internal control lines of the power unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.1.7 Communication for insulation monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.1.8 Installing internal temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.1.9 Team cabling (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.1.10 EVR Cabling (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.1.11 Sunny Central for installation near the sea (optional). . . . . . . . . . . . . . . . . . 46
5.2 External Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.2.1 AC grid-connection standard devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.2.2 AC grid connection of HE versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
5.2.3 AC grid connection with MV stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.2.4 Connection PE rail with HE version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.2.5 AC control voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
5.2.6 Handling the Connection Terminals Control voltage. . . . . . . . . . . . . . . . . . . 59
5.2.7 DC connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
5.2.8 Team Power Cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
5.2.9 External messages and signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.2.10 Sensors and digital outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.2.11 Shield Contact Handling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
5.2.12 Serial Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.2.13 Emergency-stop cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
5.2.14 Surge protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
4 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Table of Contents
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6.1 Requirements for commissioning . . . . . . . . . . . . . . . . . . . . . . . . 73
6.2 Cabling Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6.2.1 Cabling Check AC Grid Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6.2.2 Cabling Check DC Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6.2.3 Cabling Check Serial Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6.2.4 Emergency-stop cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6.2.5 Settings for thermostats and hygrostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
6.3 Switch On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7 Appendix A: Transport instructions . . . . . . . . . . . . . . . . . 76
7.1 Overview of transport possibilities. . . . . . . . . . . . . . . . . . 77
8 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
9 Appendix A - Mechanical data . . . . . . . . . . . . . . . . . . . . . 81
9.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
9.2 Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
10 Appendix B - Minimum Clearance . . . . . . . . . . . . . . . . . . 83
11 Appendix C - Air volume . . . . . . . . . . . . . . . . . . . . . . . . . . 85
12 Appendix D - Cable cross section and Torque. . . . . . . . . 86
12.1 DC connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
12.2 AC connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Installation Guide SC125_560HE-IEN083220 5
Table of Contents SMA Solar Technology AG
6 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Notes on this Manual
1 Notes on this Manual
1.1 Validity
This manual describes the transport, the installation and the commissioning of SMA central inverters
of the following types:
• Sunny Central 100LV (SC 100LV)
• Sunny Central 125LV (SC 125LV)
• Sunny Central 150 (SC 150)
• Sunny Central 200 / 200HE (SC 200 / SC 200HE)
• Sunny Central 250 / 250HE (SC 250 / SC 250HE)
• Sunny Central 350 / 350HE (SC 350 / SC 350HE)
• Sunny Central 500HE (SC 500HE)
• Sunny Central 560HE (SC 560HE)
1.2 Target Group
This manual is addressed to the installer and the operator of a PV system equipped with Sunny
Centrals.
1.3 Storage of the Manuals
All manuals for the Sunny Central as well as for the installed components must be stored together with
the installation documentation and must be accessible at all times. The documents listed below are
included in the delivery of your Sunny Central. The following information is contained in these
documents.
• Installation guide: Mounting and Installation of the Sunny Central
• User manual: Operation of the Sunny Central and the Sunny Central Control
• Circuit diagrams: Variant circuit diagram of the Sunny Central
• Commissioning report: Checklist for commissioning. After successful commissioning, the
commissioning report has to be sent to SMA Solar Technology AG.
• Documentation of
accessories:
Installation Guide SC125_560HE-IEN083220 7
You will find documentation for optional accessories or optional
equipment for the Sunny Central (e.g. installation near the sea) at
www.SMA.de.
Notes on this Manual SMA Solar Technology AG
1.4 Symbols Used
The following types of safety warnings as well as general information appear in this document:
DANGER!
"DANGER" indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING!
"WARNING" indicates a hazardous situation which, if not avoided, could result in death
or serious injury.
CAUTION!
"CAUTION" indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
ATTENTION!
"Attention!" indicates a situation that can result in property damage if not avoided.
Information
Information provides tips that are valuable for the optimal installation and operation of
your product.
8 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Safety
2 Safety
2.1 Appropriate Usage
The Sunny Central is a solar inverter. It is used to feed solar energy converted by solar modules using
photovoltaics into a low- or medium-voltage grid.
Principle of a grid-connected solar power system with a Sunny Central
Sunny Central
The standard Sunny Central is equipped with a low-voltage transform er a nd f eed s in to the l ow- vol tag e
grid.
Sunny Central LV
The Sunny Central LV feeds into the low-voltage grid. It is suitable for the connection of modules with
low voltage.
Sunny Central HE
The Sunny Central HE is a high efficiency photovoltaic inverter. It is not equipped with a low-voltage
transformer. The Sunny Central HE requires a suitable external medium-voltage transformer through
which it can feed into the grid.
Sunny Central MV
The MV stations are medium-voltage stations. In an MV station, two Sunny Central HEs feed into a
shared medium-voltage transformer. The Sunny Central MV feeds into the medium-voltage grid.
Installation Guide SC125_560HE-IEN083220 9
Safety SMA Solar Technology AG
2.2 Safety Instructions
Faults which affect the safety of the device must be immediately rectified. Unauthorized modifications
and the use of spare parts not recommended by SMA Solar Technology may cause fire, material
damage and electrical shocks. Unauthorized personnel must not have access to the equipment.
Warning signs must always be clearly readable and immediately replaced if damaged.
2.2.1 Personnel
Only qualified technical personnel may perform any and all work on the Sunny Central. "Qualified"
means that the personnel must possess training relevant to the activity performed.
For commissioning and operation of the Sunny Central, the personnel must be familiar with the content
of the Sunny Central installation guide and user manual. In particular, the safety instructions must be
followed.
2.2.2 Installation
The mounting requirements described in the installation guide must be observed. The installation has
to be carried out in an electrical operating room to guarantee optimal noise and fire protection.
The Sunny Central product line has been type-tested and approved for installation in an industrial
environment in accordance with the industry-standard EMC limits (EMC = Electro Magnetic
Compatibility). Devices for installation in households are available upon request.
For the installation, the following points have to be taken into consideration:
• Separate airflow of the supply and exhaust air of the Sunny Central from other ventilation
systems to avoid the spread of smoke in the event of fire.
• An appropriate escape route must be ensured.
• An appropriate sound insulation (see Technical Data) must be ensured.
• The EMC specifications must be observed (see Technical data)
WARNING!
Smoke in electrical areas of operation
We recommend the installation of a smoke detector inside the electrical operating room
which con trols the external emergency- stop s witch of the devic e and sw itche s off the Sunny
Central in the event of smoke.
10 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Safety
2.2.3 Special Hazards of Photovoltaic Systems
Photovoltaic systems have special characteristics representing special hazards that are described
here:
• An active power source is connected. Depending on the operating mode there may be voltage
present, either from the photovoltaic generator and/or the Sunny Central. This is especially
important to note when disconnecting parts of the system
• Very high DC voltages are present (no zero-cros sing) that, in the case of a fault or inappropriate
use of fuses or plugs, may lead to arcing.
• The short-circuit current of the photovoltaic generator is only slightly more than the maximum
operating current and is also dependent on the level of solar irradiation. If a short-circuit occurs
in the system, the available fuses are not guaranteed to switch off.
• The grid structure of the PV generator is usually an IT grid, i.e. a non-grounded grid that could
become unintentionally grounded if a ground fault occurs.
• A highly branched generator may be difficult to disconnect if a fault develops (e.g. short-circuit).
In add iti on, we r eco mmen d th e us e of ext ern al D C cir cui t br eak ers fo r di sco nne cti ng t he i nve rte r
and/or the DC main cables / Sunny String monitors (DC circuit breakers are optionally
available). At every DC input, an easily accessible DC circuit breaker should be installed
(for further information see pre-standard VDE 0100, part 712 and VDI guidelines 6012).
2.2.4 Electrical Connection
The electrical connection must be carried out according to the installation guide, the relevant circuit
diagram and the technical data of the device.
Ensure the grid connection cable for grid feeding is fused at the nominal current indicated on the type
plate. If the specified nominal current differs from the nominal current of the fuse plug, the fuse plug
having the next highest nominal current may be used.
Grid connection cable
The grid connection cable for the internal power supply must be fused with the line circuit
breakers specified in the technical data.
Lightning protection
The devices are equipped with an internal overvoltage protection on the AC and DC sides. The
desired protection level can only be achieved, if a lightning protection area concept exists for the
installation building according to DIN VDE 0185-4, which means that at the building's entrance
(transfer lightning protection area LPZ 1), lightning conductors or combined surge and lightning
conductors are available among others which are not included in the delivery.
The combined surge and lightning protection for the signal inputs can be optionally ordered.
Installation Guide SC125_560HE-IEN083220 11
Safety SMA Solar Technology AG
Emergency-stop
In installations with more than one device or with additional external emergency-stop switches, the
emergency shut-off circuits have to be connected and tested for correct functionality, as described in
the installation guide. The emergency shut-off circuit may only be supplied with voltage from a device.
Emergency shut-off circuit
• The emergency shut-off circuit may only be supplied with power from a single Sunny
Central.
• Set the bridges at the emergency-stop terminal strip of the device into correct position.
2.2.5 Power Supplies
WARNING!
Risk of lethal electric shock!
High voltages are present in the device.
• The protective ground connection must be made before the external voltage is
switched on.
• At the AC grid connection terminal, the nominal voltage, frequency and the righthand rotary field have to be maintained.
• Before inserting the DC input fuses (internal or external), the correct polarity and
earth fault protection of the inputs must be ensured. The fuses may only be inserted
or removed under load-free conditions and when using the appropriate personal
protective equipment and fuse carriers.
• In the case of inserted DC fuses (internal or external), reverse voltage is applied to
all externally connected DC main distributors and DC sub-distributors (Sunny String
Box) as well as the team device via the bus bar in the Sunny Central.
• The doors must remain closed when connecting the supplies!
Requirements for switching on the external power supplies
• All connections have been carried out according to the installation guide and the circuit
diagram.
• The protective ground connection for grid feed-in and for internal power supply has been made.
• The device has been switched off. The key switch is in the "stop" position and the main switches
are switched off.
• The DC input fuses (internal and external) are pulled and the protection against accidental
contact (Plexiglas covers) is installed. For team operation on both devices.
• The nominal voltage, frequencies and the right-hand rotary field are maintained (see device
technical data).
• The polarity of the DC voltage at the inputs/fuse inputs (device dependent) has been checked.
12 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Safety
• The polarity of the DC voltage at the inverter input/team input (device dependent) has been
checked.
• The photovoltaic generator has been checked with an insulation test to ensure that there is no
ground fault.
Sequence for switching on the external power supplies
• Grid voltage for the grid feed-in
• Grid voltage for internal power supply
• DC voltage from the photovoltaic generator
• DC voltage for team operation (optional)
2.2.6 Disconnecting the device
External disconnection of the device must always occur under load-free conditions. The device must
be switched off in order to do this, the key switch must be in the “Stop” position.
DANGER!
Risk of lethal electric shock!
Work on the Sunny Central may only be performed after switching off the power to the
unit. The VDE regulations must be followed.
• Disconnection (also team device)
• Secure against re-connection
• Verify that the installation is free of voltage
• Ground and short the unit if necessary (not on the DC side)
• If necessary, cover or protect against accidental contact with any neighboring
voltage carrying components
The following power supplies must be disconnected:
• Grid voltage for the grid feed-in
• Grid voltage for internal power supply (optional)
• DC voltage from the photovoltaic generator
• DC voltage for team operation (optional)
• If necessary, additional external voltages (e.g. emergency-stop)
Simply switching off the main AC and DC switches is not sufficient to ensure proper disconnection of
the device. The main switches only separate the power circuit from the grid and the photovoltaic
generator.
Installation Guide SC125_560HE-IEN083220 13
Safety SMA Solar Technology AG
DANGER!
Risk of lethal electric shock!
Dangerous accidental-contact voltages can be present in the Sunny Central even when the
main AC and DC switches are switched off!
• After switching off the Sunny Central, wait a minimum of 5 minutes.
The disconnection of the DC voltage is carried out by the internal or external DC input fuses or, if
available, external circuit breakers. The disconnection with the DC input fuses has to be carried out
under load-free conditions.
The device contains capacitors on the DC and AC sides that discharge when the device is
disconnected. After switching off, there are dangerous accidental-contact voltages present within the
device for several minutes. If there is a fault in the device, these voltages may also remain present for
a longer period of time. For these reasons, wait a minimum of 5 minutes after switching off before
opening the device.
WARNING!
Risk of lethal electric shock!
• To avoid arcing, the load-free status must be checked with a current probe (using a
clamp-on ammeter) before removing the DC input fuses. The fuses may only be
pulled/inserted using the personal protective equipment and fuse carriers.
• In the case of inserted DC fuses (internal or external), reverse voltage is applied to
all externally connected DC main distributors and sub-distributors (Sunny String
Monitor) as well as the team device via the the bus bar in the Sunny Central.
• In the event of a failure, the DC contactors may carry a life-threatening DC voltage!
• The discharge time of the capacitors is longer than 5 minutes.
The Plexiglas cover must be removed in order to pull the fuses. The cover must never be removed from
both poles at the same time. After the cover has been removed from one pole, and the fuse has been
pulled, the cover must be immediately re-installed before removing the cover from the second pole.
The covers must always remain in place when fuses are not to be pulled.
Disconnection of system components without risk
In addition, we recommend the use of external DC circuit breakers for disconnecting the
inverter and/or the DC main cables / Sunny String monitors (DC circuit breakers are
optionally available). Even in the case of faults or fire, this allows system components to be
safely disconnected.
14 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Safety
Team devices
WARNING!
Risk of lethal electric shock!
Before working on a team device, both devices must be disconnected.
If two devices in the team are connected, all necessary measures have to be taken to disconnect both
devices. This especially applies to the DC inputs. The team contactor is not a reliable disconnection
unit between the devices.
2.2.7 General Information
Hearing Protection
The device fans and the power unit create significant levels of operating noise. In addition to this, a
fault in the device can lead to very high noise levels. For these reasons, we recommend the use of ear
protection when in the vicinity of the device.
High noise levels in electrical operating rooms
We rec omm end the use of e ar p rot ect ion whe n in the vic ini ty o f the Sunny Central electrical
operating room for extended periods.
Burns
Immediately after disconnecting the device, certain components can be very hot (e.g. fuses,
transformer core, sine filter, heat sinks etc.) - depending on the operating conditions.
Safety gloves should always be worn when working near components that can be expected to be
very hot.
High temperature of device components
We recommend wearing safety gloves during all work on the device.
Installation Guide SC125_560HE-IEN083220 15
Delivery SMA Solar Technology AG
3 Delivery
3.1 Transport
Only the transport methods described in the installation guide are permissible, follow the transport
requirements in Appendix A.
The inverters consist of two switch cabinet units, the DC / inverter cabinet and the AC cabinet which
are separately transported and installed on site.
The inverters and/or inverter units are delivered on pallets. Under standard delivery conditions, a
forklift must be available. When unloading, the heavy-load markings mus t be g ive n du e co nsi der ati on.
3.1.1 Transport Possibilities
WARNING!
Heavy weight of switch cabinet units!
Danger of tipping during transport!
• The cabinet units must always be transported in an upright position.
• The center of gravity of the Sunny Central is indicated on the outside of the
packaging.
Transport using a pallet truck or forklift
For the transport of the respective switch cabinet with pallet trucks or forklifts, the plinth panel can be
unscrewed and in this way the fork of the pallet truck or lift can be put under the cabinet.
Both screws per plinth panel can be loosened with a TX30 torque key.
ATTENTION!
Damage to the Sunny Central through missing plinth panels
The plinth panels are essential for stable positioning of the switch cabinet. In the case of
transport on a pallet, it is necessary to install the plinth panels. Otherwise there is the risk
that the base will collapse under the weight of the switch cabinet.
Transport using a crane
Du e to the hea vy w eig ht o f th e sw itc h ca bin ets , th e trans por t with crane eyelets is only permitted under
certain conditions. The inverters are therefore delivered without crane eyelets. Otherwise there is the
risk of damaging the cabinet. Use an appropriate crane fork instead which can be put below the
switch cabinet when the plinth panels are unscrewed.
16 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Delivery
Transport using crane eyelets
The transport of the switch cabinets with crane eyelets is not permitted as a standard means
of transport!
In exc ept ion al c ase s, t he tran spo rt w ith cra ne e yel ets is p erm itt ed. In c ase of t ran spo rt u sin g
a crane, the following points have to be observed:
• Asymmetric weight distribution
•Heavy load.
• Most of the switch cabinet's weight is located in the rear area.
3.2 Identifying the Sunny Central
You can identify the Sunny Central using the type plate (see figure below). The type plate can be
found on the inside of the door of the Sunny Central.
A
B
C
A Type description of the Sunny Central with option key
B Version of the Sunny Central. "s" stands for "special version".
C Sunny Central Serial number
Installation Guide SC125_560HE-IEN083220 17
Delivery SMA Solar Technology AG
Switch cabinet view of Sunny Central inverter cabinets
Switch cabinet view Sunny Central 150
Achtung!
Bei ausgeschaltetem
Hauptschalter
unter Spannung
Switch cabinet view
Sunny Central 250 / 250HE
Switch cabinet view
Sunny Central 350 / 350HE
Achtung!
Bei ausgeschaltetem
Hauptschalter
unter Spannung
18 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Delivery
Switch cabinet view
Sunny Central 500 / 560HE
with EVR option (A)
Sunny Central MV station view
A
!
3.2.1 Checking for Transport Damages
Check the packaging and the device for any possible damage and compare the contents of the
de liv ery wit h the de liv ery doc ume nta tio n. I n th e case o f da mag e to the device and/or unclear delivery
contents, immediately contact SMA Solar Technology.
Transport security
The devices are delivered in part units which do not reflect the protection class specified in
the technical data. The packaging offers an appropriate protection against humidity and
damage.
3.2.2 Storage
Storage information
The equipment may only be stored in rooms protected from dust and moisture.
Installation Guide SC125_560HE-IEN083220 19
Mounting the Device SMA Solar Technology AG
4 Mounting the Device
Sunny Central Installation requirements
Every Sunny Central has different individual installation requirements. These can be
ordered at any time from SMA Solar Technology and have to be observed for project
planning and for the preparation of the installation site.
4.1 Installation Site Requirements
4.1.1 Foundation
The foundation must guarantee solid and safe positioning of the inverter. T he fou ndation must p rovid e
the load-carrying capacity necessary to cope with the weight of the inverter. The inverter cabinet must
be ins tal led on a lev el surf ace . Any existing unevenness, depress ions or s lopes m ust be c orr ect ed p rio r
to installation.
4.1.2 Distance to the wall
When installing the inverter, appropriate distance to the wall for minimum passageways, escape
routes and ventilation have to be observed. Corresponding information about the inverter type in
question are included in the "Sunny Central Installation requirements" (separate document).
4.1.3 Inverter Protection Rating / EMC / Sound Levels
The Sunny Central is suitable for installation in a station located in a dry, dust-reduced environment
according to protection rating IP20. With regard to the EMC emissions and the noise level, the Sunny
Central inverter is designed for installation in an industrial environment.
Sunny Central installation location
The Sunny Central inverter has to be installed in an electrical operating room.
20 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Mounting the Device
4.1.4 Electrical Operating Room
For the installation and connection of the Sunny Central central inverters, observe DIN VDE 0100,
part 729, part 731. The requirements for the electrical operating room for the installation of high
voltage systems up to 1000 V as well as the requirements for passageways and escape routes are
included here.
Minimum passageway in electrical operating rooms
Observe the following points for a minimum passageway:
• With fully opened cabinet doors, a minimum passage width of 500 mm
(escape route) must be maintained, see DIN VDE 0100 part 729, part 731.
• To maintain the minimum passageway requirements, the cabinet doors in an inverter
sy ste m wi th two r ows of o ppo sin g ca bin ets (e.g. i nst all ati on i n a st ati on b uil din g) m ay
only be opened on one side at a time.
MV Stations
The inverters of the HE series are usually installed in a concrete compact station, generally opposite
as a "left" system and "right system". The installation has to be carried out in accordance with the VDE
guidelines for a closed electrical operating room. In the figure below, a left-hand and right-hand
system is shown.
Left system Right system
ADC cabinet
B Inverter cabinet
CAC cabinet
The AC cabinets should in any case be located at the partition wall to the transformer room in order
to implement the AC power cabling to the transformer with short cable routes.
Installation Guide SC125_560HE-IEN083220 21
Mounting the Device SMA Solar Technology AG
WARNING!
Smoke in electrical areas of operation
We recommend the installation of a smoke detector inside the operating room which
controls the external emergency-stop connection of the device and which switches off the
Sunny Central in the event of smoke.
In the following a schematic top view of the Sunny Boys located in a station is shown. The installation
of the inverters is realized as a "right-hand system" (above) and "left-hand system" (below).
AC cabinet
Inverter cabinet
DC cabinet
Exit
Partition wall to the transformer room
AC cabinet
Inverter
DC cabinet
cabinet
4.1.5 Ventilation
For cooling the inverter, an appropriate air supply is necessary. To guarantee secure operation and
the maximum of feed-in power, the allowable ambient temperature has to be observed.
The required air is drawn through the switch cabinet doors and is blown out via the roof or the back
wall of the cabinet unit depending on the Sunny Central model Thus the devices can be installed
directly adjacent to each other. The air needed as well as the appropriate distance to the wall can be
found in the "Sunny Central Installation requirements" (separate document). Filters which clean the
absorbed air are installed at the air inlet openings.
Should the required amount of air at the installation site of the Sunny Central be too low, a larger
amount of air has to be made available (supply air bars, fan etc.) through construction measures.
The inlet air must satisfy the requirements of classification 3S2 (see table). The operation of the inverter
is suited to a relative humidity of 15 … 95 %.
22 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Mounting the Device
Air Quality Classification
Environmental requirements for fixed site use Class
3S1 3S2 3S3 3S4
a) Sand in the air [mg/m³] - 30 300 3000
b) Dust (suspended matter) [mg/m³] 0.01 0.2 0.4 4.0
c) Dust (fallout) [mg/m³] 0.4 1.5 15 40
Sites where dust fallout is kept to a minimum
through appropriate measures.
Si tes whe re no sp ecial m eas ures ha ve been taken
to reduce the sand or dust levels and which are
far from sand and dust sources
Sites near to sand and dust sources x x
Sites in production halls where sand or dust is
present, or sites in geographical locations in
which the air can contain high quantities of sand
and dust
Should the required air quality at the installation site of the Sunny Central not be available,
corresponding requirements have to be made available (e.g. additional filters in the building supply
air bar) through construction measures.
Ambient Conditions
The following points for environmental conditions have to be observed:
• amount of fresh air
• required air quality,
• relative humidity
• Allowable ambient temperatures
xxxx
xxx
x
The waste heat (exhaust air) produced by the inverter has to be led away from the device to observe
the maximum allowable ambient temperature and to ensure that the installation room is not
unnecessarily heated up by the warm exhaust air. This takes place through the installation of an
exhaust airflow (e.g. air channel).
CAUTION!
Risk of crushing and bruising by metal parts.
Remove the finger protection from the fan openings of the Sunny Central before installing
the exhaust airflow.
Installation Guide SC125_560HE-IEN083220 23
Mounting the Device SMA Solar Technology AG
According to the Sunny Central type, the exhaust air is lead out of the inverter through either the top
or the rear. The Sunny Central types 350, 350HE, 500HE and 560HE have a combined exhaust
airflow from the top and through the rear of the cabinet units. The method of exhaust is described in
the "Sunny Central Installation requirements". With the exhaust airflow to the "rear" it is possible to
lead the exhaust air directly out of the building through a weather protection bar installed inside the
bu ild ing wal l. The i nve rte r ca n be ins tal led wit h the re ar t o the ope n buildi ng wall . To do t his , di sma ntl e
the finger protection from the fan openings and provide a seal or a frame-like air scoop with a seal.
Attach the air scoop to the building wall.
ATTENTION!
Operational reduction of the Sunny Central through overtemperature!
For an appropriate cooling of the inverter, the following points have to be observed:
• Obey the indicated amount of air.
• Clean the ventilation openings (filter pads) and the exhaust air bars at regular
intervals.
• Expel the exhaust air separately out of the individual cabinet components in order to
avoid thermal short circuit breaks.
Inverter specific details
The inverter-specific models of the ventilation system are described in the Sunny Central
Installation requirements (separate document).
24 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Mounting the Device
Overview of the ventilation openings
The exact position and size of the single air grills as well as for the supply air on the front side and
the exhaust air on the roof or at the rear side of the switch c abinets, are displayed with some example
cabinets.
The figures in this chapter show a "left system". Find more details about left and right
systems in chapter 4.1.4 „Electrical Operating Room“ (21).
Sunny Central 100LV / Sunny Central 150 / Sunny Central 125LV / Sunny
Central 200
A
B
Achtung!
Bei ausgeschaltetem
Hauptschalter
unter Spannung
AExhaust air BSupply air
Sunny Central 200HE
See figure above. The AC cabinet of the Sunny Central 200HE has 2 exhaust air openings; instead
of 3 as shown in the figure above.
Installation Guide SC125_560HE-IEN083220 25
Mounting the Device SMA Solar Technology AG
Sunny Central 250
A
B
AExhaust air BSupply air
Sunny Central 250HE
See figure above. The AC cabinet of the Sunny Central 250HE has 2 exhaust air openings; instead
of 3 as shown in the figure above.
Sunny Central 350
A
B
Achtung!
Achtung!
Bei ausgeschaltetem
Bei ausgeschaltetem
Hauptschalter
Hauptschalter
unter Spannung
unter Spannung
AExhaust air BSupply air
Sunny Central 350HE
See figure above. The AC cabinet of the Sunny Central 350HE has 2 exhaust air openings; instead
of 4 as shown in the figure above and 2 supply air openings instead of 4 as shown in the figure
above.
26 SC125_560HE-IEN083220 Installation Guide
SMA Solar Technology AG Mounting the Device
Sunny Central 500HE / Sunny Central 560HE
A
C
A
B B
AExhaust air BSupply air
CEVR option
C
Installation Guide SC125_560HE-IEN083220 27
Mounting the Device SMA Solar Technology AG
4.2 On-Site Inverter Installation
The Sunny Centrals consist of two switch cabinet units, which are electrically and
mechanically connected on site. Make sure that both switch cabinets have the same serial
number. You will find the serial number on the type plate or on the transport packaging of
the Sunny Central switch cabinet.
After both switch cabinets have been installed next to each other, the transport locks of the transformer
have to be removed, the seals have to be inserted and the individual cabinets have to be mechanically
and electrically connected for the final mounting in the electrical operating room. All necessary
materials required for the connection of the switch cabinets are included in the delivery.
4.2.1 Remove transport locks
Remove the transport locks.
In some Sunny Centrals, the transfomers and the sine filter are
secured with transport locks on the cabinet. The transport lock is a
metal angle which is fixed at the switch cabinet side.
The following table shows which type is delivered with transport locks.
Sunny Central Transport lock Transformer Transport lock Sine filter
100LV yes no
125LV yes no
200 yes no
200HE no no
250 yes no
250HE no no
350 yes no
350HE no no
500HE no yes
560HE no yes
28 SC125_560HE-IEN083220 Installation Guide
Loading...